hvm: wire up domctl and xsm hypercalls

These hypercalls are usable by HVM guests.  Once connected, simple
functions of the Xen toolstack can be run from an HVM domain if that
domain is permitted access (which is currently only possible via XSM).

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Committed-by: Keir Fraser <keir@xen.org>

xen/arch/x86/hvm/hvm.c

@@ -3239,8 +3239,10 @@ static hvm_hypercall_t *const hvm_hypercall64_table[NR_hypercalls] = {
     HYPERCALL(event_channel_op),
     HYPERCALL(sched_op),
     HYPERCALL(set_timer_op),
+    HYPERCALL(xsm_op),
     HYPERCALL(hvm_op),
     HYPERCALL(sysctl),
+    HYPERCALL(domctl),
     HYPERCALL(tmem_op)
 };
 
@@ -3256,8 +3258,10 @@ static hvm_hypercall_t *const hvm_hypercall32_table[NR_hypercalls] = {
     HYPERCALL(event_channel_op),
     COMPAT_CALL(sched_op),
     COMPAT_CALL(set_timer_op),
+    HYPERCALL(xsm_op),
     HYPERCALL(hvm_op),
     HYPERCALL(sysctl),
+    HYPERCALL(domctl),
     HYPERCALL(tmem_op)
 };